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Calcimator

Architectural Form Liner Calculator

Calculate form liner quantity, cost, and release agent for architectural concrete finishes.

Inputs

%

Results

Gross liner area (sf)

550

Net wall area (sf)500
Liner sheets (4×8)18
Initial liner cost ($)$6,600.00
Amortized cost ($/sf/use)$0.40
Cost per use ($)$220.00
Release agent (gallons)2
Total cost per sf ($/sf)$0.52
Double Sided Area Sf1,100
Double Sided Cost$13,200.00
How to Use This Calculator
  1. Enter the Wall Length and Wall Height in feet to calculate the net wall area.
  2. Enter the Liner Cost per square foot and expected Liner Reuses to compute amortized cost.
  3. Enter the Waste/Overlap percentage (typically 5–15%) to account for pattern alignment.
  4. Review Amortized Cost per square foot per use and Total Initial Liner Cost to budget the project.
  5. Check Release Agent gallons needed per pour and Total Project Cost per square foot for bid pricing.

How the result changes with Wall length (ft)

Wall length (ft)Gross liner area (sf)
51561
1761,936
3253,575
4504,950

What each input means

Wall length (ft)
Length of the wall receiving architectural finish.
Wall height (ft)
Height of the wall receiving architectural finish.
Liner cost ($/sf)
Cost per square foot. Simple textures: $3-8, complex patterns: $12-25.
Liner reuses
Number of uses per liner. Elastomeric: 20-75, rigid plastic: 3-10.
Waste/overlap (%)
Additional liner for waste, overlaps, and pattern alignment. Typically 5-15%.
Release agent coverage (sf/gal)
Coverage rate of form release agent in square feet per gallon.

What each result means

Net wall area (sf)
Actual wall face area.
Gross liner area (sf)
Total liner area including waste and overlap.
Liner sheets (4×8)
Number of standard 4×8 ft liner sheets needed.
Initial liner cost ($)
Total cost to purchase form liners.
Amortized cost ($/sf/use)
Liner cost amortized over expected reuses per square foot.
Cost per use ($)
Total liner cost amortized per use.
Release agent (gallons)
Gallons of form release agent needed per pour.
Total cost per sf ($/sf)
All-in cost per square foot including amortized liner and release agent.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Wall length (ft) = 50, Wall height (ft) = 10, Liner cost ($/sf) = 12, Liner reuses = 30 = 6 input(s) provided
  2. Calculate Gross liner area
    Gross liner area = netWallAreaSf * (1 + wastePct / 100)
    550 = 550
  3. Calculate Net wall area
    Net wall area = wallLength * wallHeight
    500 = 500
  4. Calculate Liner sheets
    Liner sheets = ceil(grossLinerAreaSf / linerSheetSf)
    18 = 18

Engine last updated .

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